title: Synthesis of shield-like singly twinned high-index Au nanoparticles.
abstract: A new gold nanostructure--shield-like Au nanoparticles (NPs) with a single twin plane and high-index {hhl} facets--was discovered in a simple seed-mediated synthesis. The development of this new shape is believed to be due to the preferential adsorption of cetyltrimethylammonium cations (CTA(+)) on high-index facets and the coalescence of the NPs by the charge screening effect of NaCl. These shield-like Au NPs display some properties that are distinctively different from other types of Au NPs.
authors.affiliation: Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Republic of Singapore.
authors.forename: Yue
authors.initials: Y
authors.lastname: Yu
authors.forename: Qingbo
authors.initials: Q
authors.lastname: Zhang
authors.forename: Jianping
authors.initials: J
authors.lastname: Xie
authors.forename: Xianmao
authors.initials: X
authors.lastname: Lu
authors.forename: Jim Yang
authors.initials: JY
authors.lastname: Lee
mesh_terms: D006046:Gold / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012031:Refractometry; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D006046:Gold